Re: [PATCH 2/4] vdpa/mlx5: Fix is_index_valid() to refer to features

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On Tue, Jan 11, 2022 at 8:11 PM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote:
>
> On Tue, Jan 11, 2022 at 01:31:28AM -0800, Si-Wei Liu wrote:
> >
> >
> > On 1/10/2022 11:22 PM, Eli Cohen wrote:
> > > Make sure the decision whether an index received trough a callback is
> > > valid or not consults the negotiated features.
> > >
> > > Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
> > Reviewed-by: Si-Wei Liu<si-wei.liu@xxxxxxxxxx>
> >
> > Is there more for this series? Subject says there're 4 patches in total?
>
> OK so with this + 1/4 are we OK with v7 of the big patchset now?
> I'm kind of beginning to worry it's rushed ...
> Jason?

With Eli's new series [PATCH 0/4] Fixes to confing max virtqueues series

We are almost fine, Siwei promise to post other minor issues if necessary.

Thanks

>
>
> > > ---
> > >   drivers/vdpa/mlx5/net/mlx5_vnet.c | 10 +++++++---
> > >   1 file changed, 7 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> > > index d1ff65065fb1..9eacfdb48434 100644
> > > --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
> > > +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> > > @@ -133,10 +133,14 @@ struct mlx5_vdpa_virtqueue {
> > >   static bool is_index_valid(struct mlx5_vdpa_dev *mvdev, u16 idx)
> > >   {
> > > -   if (unlikely(idx > mvdev->max_idx))
> > > -           return false;
> > > +   if (!(mvdev->actual_features & BIT_ULL(VIRTIO_NET_F_MQ))) {
> > > +           if (!(mvdev->actual_features & BIT_ULL(VIRTIO_NET_F_CTRL_VQ)))
> > > +                   return idx < 2;
> > > +           else
> > > +                   return idx < 3;
> > > +   }
> > > -   return true;
> > > +   return idx <= mvdev->max_idx;
> > >   }
> > >   struct mlx5_vdpa_net {
>

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